Ubuntu 25.10 Beta Arrives: Rust Coreutils Flops Compared to Classic GNU Build
Ubuntu 25.10 is currently in beta and slotted for an October 9th release, meaning bug hunting is the primary goal.
Users are deeply divided on the direction. cosmicrose stated the purpose of this .10 release is purely bug discovery before a stable LTS drop. Meanwhile, DeltaWingDragon questioned if the changes will break derivative systems like Mint. Conversely, 9limmer pointed out Ubuntu's historical pattern, advising reliance on LTS releases. Separately, an observational report noted the Rust Coreutils implementation performs worse than the traditional C-based GNU Coreutils.
The consensus settles on instability and caution. The official path points to beta testing for bug fixing, while the clearest technical fault line is the confirmed performance regression of the new Rust utilities compared to the existing GNU tools.
Key Points
The .10 release cycle's sole purpose is finding and fixing bugs.
cosmicrose stated this explicitly regarding the 25.10 beta cycle.
The new Rust Coreutils are slower than the old C-based GNU Coreutils.
The performance comparison thread flagged that the Rust version lags behind the established GNU version.
Changes might destabilize dependent Linux distributions.
DeltaWingDragon voiced concern about the impact on derivative distros like Mint.
Adherence to Long Term Support (LTS) stability is expected.
9limmer cited Ubuntu's historical trend of focusing solely on LTS versions since 2014.
Source Discussions (3)
This report was synthesized from the following Lemmy discussions, ranked by community score.